#pragma once 

#include<string>
#include<vector>

using namespace std;

class OfflineMsgModel{
public:
    //插入用户的离线消息
    static bool insertMsg(int userid,string msg);
    //删除用户的离线消息
    static bool deleteMsg(int userid);
    //查询用户的离线消息
    static vector<string> queryMsg(int userid);


private:
};